  <nav class="navbar navbar-expand-lg navbar-light bg-light">
    <a class="navbar-brand" href="index.html">Next-gen Kaldi demo</a>
      <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
      </button>
    <div class="collapse navbar-collapse" id="navbarSupportedContent">
      <ul class="navbar-nav mr-auto">
        <li class="nav-item active">
          <a class="nav-link" href="index.html">Home <span class="sr-only">(current)</span></a>
        </li>

        <li class="nav-item">
          <a class="nav-link" href="upload.html">Upload</a>
        </li>

        <li class="nav-item">
          <a class="nav-link" href="streaming_record.html">Streaming-Record</a>
        </li>

        <li class="nav-item">
          <a class="nav-link" href="offline_record.html">Offline-Record</a>
        </li>

      </ul>
    </div>
  </nav>
